Searchlight



K. KLEINERT July 16, 1929.

SEARCHLIGHT Filed Feb. 17, 1926 2 Sheets-Sheet July 16, 1929. KI`KLEINERT 1,721,454

' SEARCHLIGHT Filked Feb. 1'7, 1926 2 Sheets-Sheet 2 Patented July 16|,19.29.

. UNITED STATES KARL KLEINERT, E

-1,721,454 PATENTv oFFlcE.

vSTUTTGART, GERMANY, AssIeNoRy To ROBERT BOSCH AKTIEN- GESELLSCHAFT, oFSTUTTGART, GERMANY.

sEaReHLIGHT.

.Aplzvlieationfiled February` 17, 1926, Serial No. 88,873, and inGermany March 16, 1925.

' a dirigible searchlight, especially adapted scarchlight is mounted formovement in two for' use on power vehicles, in which the planes, andwhich is adapted to he operated bv the driver without leavingr his scateven when t-he vehicle is enclosed.

Prior art proposals along this line are objectionable becausetwo-separate manipulations of the operating handle are necessary incaseit is desired -to adjust the searchlight in two planes, becausethere is no n atural connection or relation between movement of thehandle and the searchlight when the handle is moved to adjust thesearchlight, because the adjustment is limited and is made withdifficulty, or because the mounting and operating mechanism arecomplicated. A

`The present invention-has i'or its object the provision of a simpleadjustable searchlight mountingv in which the above objections areeliminated.`

In the accompanying drawing, in which` two vforms of constructions ofthe subject matter of the present invention are illustrated, Fig. lshows a searchlight with rackbar drive in longitudinal section: Fig. 2is a c-ross section on the line A-B of Figure l, Fig. 3 shows asearchlight with double gear drive partly in side view and partly inlongitudinal section, While Fig. 4 is a side vievv of Fig. 3. l

In the construction illustrated in Figs. l

' and 2, a hollow shaft a projects through a Wall l of the vehicle andis rotatably mount ed in' the flanges or supporting guides b, Onthe'ends of the shaft a casings c, 0 are secured by means of the studbolts d, d respectively. In the longitudinall bore e of each of saidcasings a rack-bar g is arranged in such manner that it'can slide in ahorizontal or longitudinal direction. Said rackbar g meshes 'at its endswith pinions h, L which are arranged in. the bores f, f ot' theca'singsvc', c and are secured by keys lo, on the bolts z', 11. Thecasing o which is providedl on the side operating the searchllght isenclosed by the'two arms, n, a of a lever Z in such a manner that thebolt i projects through the two arms n, 'n and can be secured to thelever Zby means of a pin m. Inthe same manner the'second bolt .i

on the searchlight side of the wall l is secured by means of apinl tothe searchlight carrier Q, the two arms of which enclose the fusing c.'In the construction shown in Figs. 3 and lfbevel gear wheels f/ and.saro substituted for the spur gear wheels la., l1., which bevel gearwheels mesh with the bevel gear-'wheels 1' and t, respectively, securedon a shaft o which latter is arranged within the hollow shaft a. 'Thetwo bevel wheel pairs q, r and s, t have the same ratio of transmission.y

The hand lever Z and the search light carrier 0 are suitably secured tobolts e', e" in such a manner that the axes ol the hand lever and ot'the' searchlight p are parallel.

The operation ofthe two described forms of construction is as follows:In Figure l the searchlight is turned by the oscillation of the handlever Z around the axis 'Z'. whereby the pinion ZL longitudinallydisplaces the 'rack-bar 0 so that the other pinion Zt and thesearchlight support which is rigidly secured to said pinion, are turnedthrough the same angle and in the same direction as the, lever Z. In themodilication illustrated in Figure 3 the moven'lent of the lever Z istransmitted by means of the bevel wheel pairs, r and 2,, s for the sameamount and in the same direction to the searchlight support w, which isrigidly secured to the bevel wheel s, as the bevel wheels g and s arearranged on opposite ends of the axis of the shaft Z). In both forms,the axes of the searchlight and operating handle gears are parallel andthe operating handle and the rays of light from the searchlight extendin parallel lines.

l/Vhile in the structure shown in Figs. l

and 2, the searc'hlight cannot pertorm a complete rotation in the planevertical to the image or object to be focused, the searchlight in theconstruction shown in Figs. 3 and 4 is so spaced laterally fromthehollow shaft a by a suflicient extension of theshaft l a by means ofthe hand lever Z.

-It will be seen, therefore, that the present invention permits the adjustment of the searchlight in any desired direction by a singlemanipulation of the lever, without it be King,.necessary to turn thelight irst'n one" plane and then in the other plane. As the turningangle of the searchlight and of the hand lever can be made equal both asto amplitude and also direction, and as the rotation of the searchlightand of the hand lever are in the same direction, the adjustment of thehand lever on the object to be illuminated results simultaneously in thedesired adjustment of the searchlight. By reason of the fact that theoperatinghandle and the searchlight extend in the same direction, theadjustment can be made quickly and naturally. Furthermore the turningangles are unlimited and the required driving power remains alwaysequal.

I claim:

1. Mechanism operable through a Wall for operating` a searchlight in twoplanes comprising a supporting 4guide, a hollow shaft rotatablysupported therein, gear Wheels mounted on parallel axes extendingtransversely of said shaft, means transmitting rotation of one of saidgear wheels to the other, a searchlight connected to one of said gearwheels and one end of said shaft, and an operating lever connected tothe other end of the shaft and the other gear wheel, movement of thelever causing the search light to follow the same angular movement andto take up the same relative position as said lever in any movement ofthe lever.

2. Mechanism for operating a searchlight in two planes comprising asupporting guide, a hollow shaft rotatably supported therein, housingssecured to the ends ot said hollow shaft, a second shaft arranged Withinsaid hollow shaft, parallel Shafts extending transversely of said secondshaft and rotatably mounted, one in each housing, gearing` connectingsaid second shaft. to said parallel shafts, a handle connected to one ofsaid parallel shafts, and a searchlight connected to the other parallelshaft, movement of the lever causing the searchlight to' follow the sameangular movement and to take up the same relative position as theleverin any movement thereof.

3. Mechanism as set out in claim 2 in which the searchlight is displacedlaterally on its Supporting shaft with respect to the hollow shaft tosuch an extent that the searchlight can describe a complete revolutionabout said hollow shaft.

In testimony whereof I have hereunto atxedmy signature.

KARL KLEIN ERT.

